| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1990/1991 | 60.478 | 千吨 | 2026-9 |
| 1989/1990 | 54.786 | 千吨 | 2026-9 |
| 1988/1989 | 56.92 | 千吨 | 2026-9 |
| 1987/1988 | 61.901 | 千吨 | 2026-9 |
| 1986/1987 | 74.708 | 千吨 | 2026-9 |
| 1985/1986 | 54.786 | 千吨 | 2026-9 |
| 1984/1985 | 44.113 | 千吨 | 2026-9 |
| 1983/1984 | 40.556 | 千吨 | 2026-9 |
| 1982/1983 | 28.46 | 千吨 | 2026-9 |
| 1981/1982 | 27.037 | 千吨 | 2026-9 |
| 1980/1981 | 32.018 | 千吨 | 2026-9 |
| 1979/1980 | 38.421 | 千吨 | 2026-9 |
| 1978/1979 | 39.844 | 千吨 | 2026-9 |
| 1977/1978 | 39.133 | 千吨 | 2026-9 |
| 1976/1977 | 51.94 | 千吨 | 2026-9 |
| 1975/1976 | 51.94 | 千吨 | 2026-9 |
| 1974/1975 | 35.575 | 千吨 | 2026-9 |
| 1973/1974 | 49.805 | 千吨 | 2026-9 |
| 1972/1973 | 49.805 | 千吨 | 2026-9 |
| 1971/1972 | 49.805 | 千吨 | 2026-9 |
| 1970/1971 | 48.382 | 千吨 | 2026-9 |
| 1969/1970 | 25.614 | 千吨 | 2026-9 |
| 1968/1969 | 34.152 | 千吨 | 2026-9 |
| 1967/1968 | 30.595 | 千吨 | 2026-9 |
| 1966/1967 | 24.191 | 千吨 | 2026-9 |
| 1965/1966 | 39.133 | 千吨 | 2026-9 |
| 1964/1965 | 30.595 | 千吨 | 2026-9 |